function s1_hello(){
	echo "hello, world!"
}

function s2_tell_who_i_am(){
	whoami
}
function s3_which_distro_do_i_use(){
	cat /etc/*-release | grep "NAME=" | sed 's/NAME=//'
}

function s4_view_my_cpu_arch(){
	uname -m
}

function s5_show_first_scsi_disk_size(){
	lsblk -b -o SIZE,TYPE | awk '$2=="disk" {print $1}' | head -n 1 | awk '{print int($1/1024^3)}'
}

function s6_show_main_memory_size_in_megabytes(){
	free -m | awk '/^Mem:/ {print $2}'
} 
